Question: Which city was twinned with Nagoya on 21st December, 1978?
Paraphrase: Give me the name of the city that was twinned with Nagoya on 21st December, 1978
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q11751 p:P190 ?s . ?s ps:P190 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'1978')) }